Performer manifolds are dual-plane, low-rise intake manifolds with a 180° firing order and patented runner design that you won't find in other brands.
This patented design greatly improves torque over a wide rpm range for excellent throttle response, especially off-idle through the mid-range.
•Performers accept late-model choke, water-neck, air-conditioning, alternator and H.E.I.
•Has provisions to add oil fill tube.
•Not for 1987 and later cast iron or Chevy Bowtie heads.
•Will fit 1987 and later stock aluminium heads.
•Made in USA
suits early style chev